Kingston has released a new firmware update for their HyperX 3K SSD that fixes TRIM support. Here are the release notes:

Release Notes for SH103S3, Firmware Rev. 503 (08/22/12) • Restored a minor TRIM performance variation from a previous Firmware release • Fixed a power management condition where the device failed to respond to a COMWAKE, which might have resulted in the SSD becoming unresponsive thereby requiring a reset by the host